Association of Comorbid Serious Mental Illness Diagnosis With 30-Day Medical and Surgical Readmissions

The Effect of Pharmacy-Led Medication Reconciliation on Odds of Psychiatric Relapse at a Community Hospital

Purpose: Individuals with psychiatric disorders are at increased risk for treatment non-adherence and related complications, especially during transitions of care. Medication reconciliation is now a standard process during hospital admissions that is uniformly recommended by international organizations to aid in safe and effective care transitions. Pharmacy-led medication reconciliation (PMR) practices are poised to represent a standardized method of reconciliation attempt within this underserved population with complex medication histories. Methods: A retrospective cross-sectional study using medical chart review was conducted for all adults admitted to the inpatient psychiatric service at a community hospital in Buffalo, NY, during 2 months in 2018. Outcomes were 30- and 180-day psychiatric readmission rates, 30- and 180-day visit rates to the outpatient comprehensive psychiatric emergency program (CPEP), and composite 30- and 180-day relapse. Receipt of pharmacy-led medication reconciliation was identified from pharmacy documentation in the electronic medical record. Results: 78% of patient's medication lists on admission were reconciled, with 49% of reconciliations made by the inpatient pharmacy. Presence of a PMR did not alter the odds of inpatient readmission alone, however patients without a PMR were found to have 2.13 times higher odds of visiting the hospital's outpatient CPEP within 30-days (P = .012) and 1.9 times higher odds of any composite psychiatric relapse within 30-days (P = .024). Conclusions: Implementation of hospital-wide pharmacy-led medication reconciliation on admission may help reduce psychiatric relapse across multiple care settings.

Assessing psychiatric risk with a focus on optimizing patient satisfaction with penile prosthesis placement-a narrative review

Background and Objective

Treatment for medication-refractory erectile dysfunction (ED) is based on a shared decision-making model. The gold standard treatment for medication refractory ED is penile prosthesis (PP) placement. Patient satisfaction rates with PP are high with adequate counseling and expectation-setting. However, as with any elective surgery, patient selection is key to minimizing complications and ultimately patient dissatisfaction. Psychological well-being is an important consideration in the preoperative evaluation and postoperative management of patients undergoing PP placement.

Methods

We performed a PubMed literature review to identify pertinent studies for this narrative review. Specifically, we sought describe preoperative evaluation including appropriate counseling and patient selection as well relevant intraoperative and postoperative factors for patients undergoing PP placement with a specific focus on optimizing preoperative psychiatric factors and treatment-related patient satisfaction to identify pertinent articles describing ways to optimize patient satisfaction with PP.

Key Content and Findings

A patient's psychological state can influence the degree of understanding of their condition, affect perception of their treatment team, and limit their ability to cope with complications. All patients should undergo a thorough medical history and physical examination to screen for psychiatric health disorders, substance abuse, and chronic pain conditions. Establishing patient expectations with regards to treatment-related outcomes during the preoperative consultation will ensure congruency between the patient and performing surgeon. Patients with a more significant psychiatric distress related to their underlying sexual dysfunction may require additional evaluation and counseling preoperatively.

Conclusions

PP placement is associated with high levels of overall satisfaction in appropriately screened patients. Specific considerations during preoperative counseling and careful patient selection, intraoperative decision making to avoid or anticipate possible complications, and postoperative cares are necessary to ensure the best result for an individual patient.

Comparison of outcomes for patients with and without a serious mental illness presenting to hospital for chronic obstruction pulmonary disease: retrospective observational study using administrative data

BACKGROUND

There are few data on the profile of those with serious mental illness (SMI) admitted to hospital for physical health reasons.

AIMS

To compare outcomes for patients with and without an SMI admitted to hospital in England where the primary reason for admission was chronic obstructive pulmonary disease (COPD).

METHOD

This was a retrospective, observational analysis of the English Hospital Episodes Statistics data-set for the period from 1 April 2018 to 31 March 2019, for patients aged 18-74 years with COPD as the dominant reason for admission. Patient with an SMI (psychosis spectrum disorder, bipolar disorder) were identified.

RESULTS

Data were available for 54 578 patients, of whom 2096 (3.8%) had an SMI. Patients with an SMI were younger, more likely to be female and more likely to live in deprived areas than those without an SMI. The burden of comorbidity was similar between the two groups. After adjusting for covariates, SMI was associated with significantly greater risk of length of stay than the median (odds ratio 1.24, 95% CI 1.12-1.37, P ≤ 0.001) and with 30-day emergency readmission (odds ratio 1.51, 95% confidence interval 1.34-1.69, P ≤ 0.001) but not with in-hospital mortality.

CONCLUSION

Clinicians should be aware of the potential for poorer outcomes in patients with an SMI even when the SMI is not the primary reason for admission. Collaborative working across mental and physical healthcare provision may facilitate improved outcomes for people with SMI.

What Explains Changes in Availability of Specialty Mental Health Services in Organized Settings?

Policy Points Community mental health facilities often do not offer the full range of evidence-based clinical and support services for individuals with serious mental illness. Facilities were no more likely to offer six of seven services studied in 2019 compared with 2010 in both Medicaid expansion and nonexpansion states. For-profit facilities generally experienced the largest declines in service availability, while public facilities experienced the smallest declines with small increases in availability of select services. New payment models that incentivize the offer of specialty support services may be needed to encourage adoption of clinical and support services by specialty mental health organizations.

CONTEXT

Community mental health facilities often do not offer the full range of evidence-based clinical and support services for individuals with serious mental illness. This creates equity issues, particularly when low-income and minority communities have access to fewer facilities. Medicaid expansion might encourage facilities to offer these services. However, this decision may also be affected by facility ownership type or mediated by service cost structure, particularly in the absence of innovative payment mechanisms. In this study, we determine whether and how Medicaid expansion and facility ownership are associated with changes in specialty mental health service availability in organized settings over time.

METHODS

We estimated two-way fixed effects models using six cross-sections of the National Mental Health Services Survey and compared changes in facility-reported offering of seven services from 2010 to 2019 (54,885 facility years): psychotropic medication, case management, family psychoeducation, psychiatric emergency walk-in services, supported employment, assertive community treatment, illness management, and recovery services. We tested whether Medicaid expansion and facility ownership (private for-profit, private not-for-profit, public) were associated with differential changes in service availability from 2010 to 2019.

FINDINGS

Overall, facilities were no more likely to offer nearly all services in 2019 than 2010. We found smaller declines for psychotropic medication and psychiatric emergency walk-in services among facilities in Medicaid expansion states compared to declines in non-Medicaid expansion states (6.3 (95% CI 95% CI = 1.8-10.7) and 5.5 (95% CI = 0.2-10.8) percentage points respectively). For-profit facilities experienced the largest declines in availability from 2010 to 2019, while public facilities experienced the smallest declines and some increases in availability of select services.

CONCLUSIONS

Specialty mental health services are still not widely offered in community outpatient settings despite significant investments in Medicaid, although Medicaid expansion was associated with slower declines in availability. New payment models that incentivize outpatient facilities to offer clinical and support services may be needed.

Serious Mental Illness Exacerbation Post-Bereavement: A Population-Based Study of Partners and Adult Children

Purpose

The death of a close family member is commonly accompanied by intense grief, stress, and loss of social support. We hypothesized that recent bereavement would be associated with an increase in symptom exacerbations among adults with serious mental illness (SMI) whose partners or parents had died.

Patients and Methods

Adults whose partners and parents had died in Denmark between January 1, 2010, and June 30, 2016, were identified using linked population-based registries. History of SMI was defined as having a diagnosis of schizophrenia and schizoaffective disorders, major depression, and bipolar disorder in the five years preceding their family member's death in the Danish Psychiatric Central Research Register using International Classification of Diseases-10 codes. The odds of SMI exacerbation (ie, attempt or completion of suicide or psychiatric hospitalization) among partners and children in the first two years after death in 3-month intervals were estimated with generalized estimating equations.

Results

12.8% of partners and 15.0% of adult children with a history of SMI experienced any SMI exacerbation two years after bereavement. Among bereaved partners, older age (80+ years) was associated with a lower risk of experiencing an SMI exacerbation compared with partners aged 18-49 years (OR_adj=0.29, [0.18-0.45]). Partners with a history of SMI had significantly increased odds of SMI exacerbations three months after their partners' death compared to prior to their partners' death (ORadj = 1.43, [1.13-1.81]). There was no evidence that adult children with SMI experience increased SMI exacerbations after the death of their parents compared to prior to death.

Conclusion

Adults with a history of SMI whose partners had died are at increased risk for an SMI exacerbation post bereavement. Additional bereavement resources and support should be provided to those with a history of SMI, especially in the period immediately after death.

Assessing the Content Validity of the Revised Health of the Nation Outcome Scales (HoNOS 2018)

The Health of the Nation Outcome Scales (HoNOS) comprises 12 scales that cover the kinds of problems that may be experienced by working-age adults in contact with specialised mental health services. Drawing on 20 years' experience in clinical practice, a collaborative, international review of the HoNOS was undertaken and a revised measure (known as the HoNOS 2018) was published. In this study, 32 experts from Australia, England and New Zealand completed an anonymous web-based survey to assess the relevance, comprehensiveness and comprehensibility (aspects of content validity) of the HoNOS 2018. The experts rated 11 of the 12 HoNOS 2018 scales as 'important' or 'very important' for determining the overall clinical severity (item-level content validity index or I-CVI ≥ 0.75). Evaluations of the scales' ability to capture change, comprehensiveness and comprehensibility were more variable, but generally positive. Experts' comments provided further insights into this variability; for example, they noted that some scales combine multiple phenomena, which can result in ambiguity in item wording and assessment challenges. Results from this study suggest that the revisions have not altered the importance of the scales. Given the measure's breadth of content, training remains important for ensuring rating fidelity. Inter-rater reliability and utility testing are indicated.

The Effect of Time Spent With Participants on Program Outcomes

PURPOSE OF STUDY

Little research exists on the correlation between time spent with participants in Critical Time Intervention-modeled programs, such as Coordinated Behavioral Care's (CBC) Pathway Home, and successful completion of the programs. This study explored associations between the total amount of time spent with participants in the initial 3 months of the program and positive program outcomes.

METHODOLOGY AND SAMPLE

Data on total time spent with participants in their initial phase of the program were gathered from Pathway Home participants who were enrolled in the program from 2016 to 2019 and then were compared with program outcomes.

RESULTS

The study found positive correlations between amount of time spent with participants and the attendance of a behavioral health appointment within 1 month of community entry, and positive disenrollment outcomes. This study did not find predictive significance of time spent.

IMPLICATIONS FOR CASE MANAGEMENT PRACTICE

Time spent with participants is a significant variable to study, yet more research is needed on its relationship to positive outcomes.

Prediction value of the LACE index to identify older adults at high risk for all-cause mortality in South Korea: a nationwide population-based study

Background

As a tool to predict early hospital readmission, little is known about the association between LACE index and all-cause mortality in older adults. We aimed to validate the LACE index to predict all-cause mortality in older adults and also analyzed the LACE index outcome of all-cause mortality depending on the disease and age of the participants.

Methods

We used the National Health Insurance Service (NHIS) cohort, a nationwide claims database of Koreans. We enrolled 7491 patients who were hospitalized at least once between 2003 and 2004, aged ≥65 years as of the year of discharge, and subsequently followed-up until 2015. We estimated the LACE index using the NHI database. The Cox proportional hazards model was used to estimate the hazard ratio (HR) for all-cause mortality. Furthermore, we investigated all-cause mortality according to age and underlying disease when the LACE index was ≥10 and < 10, respectively.

Results

In populations over 65 years of age, patients with LACE index ≥10 had significantly higher risks of all-cause mortality than in those with LACE index < 10. (HR, 1.44; 95% confidence interval, 1.35–1.54). For those patients aged 65–74 years, the HR of all-cause mortality was found to be higher in patients with LACE index≥10 than in those with LACE index < 10 in almost all the diseases except CRF and mental illnesses. And those patients aged ≥75 years, the HR of all- cause mortality was found to be higher in patients with LACE index ≥10 than in those with LACE index < 10 in the diseases of pneumonia and MACE.

Conclusion

This is the first study to validate the predictive power of the LACE index to identify older adults at high risk for all-cause mortality using nationwide cohort data. Our findings have policy implications for selecting or managing patients who need post-discharge management.

Supplementary Information

The online version contains supplementary material available at 10.1186/s12877-022-02848-4.

Skilled Nursing Facility-to-Home Trajectories for Older Adults With Mental Illness or Dementia

OBJECTIVES

To examine how mental illness (MI) and Alzheimer's disease and related dementias (ADRD) were associated with whether skilled nursing facility (SNF) residents returned to and remained in the community and if receipt of home health services was associated with post-SNF home time.

DESIGN

Retrospective cohort study based on secondary data analyses.

SETTING

New York State Medicare beneficiaries who were admitted to an SNF in 2014.

PARTICIPANTS

Total of 46,137 older adults admitted to SNFs and 25,357 discharged from SNFs to home.

MEASUREMENTS

We used Medicare claims and assessment databases to derive our outcomes (discharge to the community and home time [i.e., days alive in the community]), determine MI/ADRD status, and obtain socio-demographic and clinical characteristics.

RESULTS

Among SNF admissions, 22.9% had MI, 22.6% had ADRD, and 59.0% were discharged to the community. In analyses adjusting for socio-demographic and clinical characteristics, MI and ADRD were associated with decreased odds of community discharge and less home time during 90-days of follow-up. However, when we included depressive symptoms, aggressive behaviors, and daily functioning in the analyses, these associations were attenuated. Receipt of post-SNF home health services was associated with increased home time among those with MI or ADRD.

CONCLUSION

Newly admitted SNF residents with MI or ADRD were less likely to be discharged and, if discharged, spent less time in the community. Interventions targeting depressive symptoms, aggressive behaviors, and functioning and improving linkage with home health services may help decrease differences in post-acute care trajectories between those with and without MI and ADRD.

Association of Race and Ethnicity and Anticoagulation in Patients with Atrial Fibrillation Dually Enrolled in VA and Medicare: Effects of Medicare Part D on Prescribing Disparities

Background: Racial and ethnic disparities in anticoagulation exist in atrial fibrillation (AF) management in Medicare and the Veterans Health Administration (VA), but the influence of dual VA and Medicare enrollment is unclear. We compared anticoagulant initiation by race and ethnicity in dually enrolled patients and assessed the role of Medicare Part D enrollment on anticoagulation disparities. Methods: We identified patients with incident AF (2014-2018) dually enrolled in VA and Medicare. We assessed any anticoagulant initiation (warfarin or direct-acting oral anticoagulants, DOACs) within 90 days of AF diagnosis and DOAC use among anticoagulant initiators. We modeled anticoagulant initiation, adjusting for patient, provider, and facility factors, including main effects for race and ethnicity and Medicare Part D enrollment and an interaction term for these variables. Results: In 43,789 patients, 8.9% were Black, 3.6% Hispanic, and 87.5% White; 10.9% participated in Medicare Part D. Overall, 29,680 (67.8%) patients initiated any anticoagulant, of which 17,568 (59.2%) initiated DOACs. Lower proportions of Black (65.2%) than Hispanic (67.6%) or White (68.0%) patients initiated any anticoagulant (p= 0.001), and lower proportions of Black (56.3%) and Hispanic (55.9%) than White (59.6%) patients (p=0.001) initiated DOACs. Compared to White patients, Black patients had significantly lower initiation of any anticoagulant, adjusted odds ratio (aOR) 0.89; 95% CI 0.82-0.97. The aORs for DOAC initiation were significantly lower for Black (0.72; 95% CI, 0.65-0.81) and Hispanic (0.84; 95% CI, 0.70-1.00) than White patients.The interaction between race and ethnicity and Medicare Part D enrollment was non-significant for any anticoagulant (p=0.99) and DOAC (p=0.27) therapies. Conclusions: In dually enrolled VA and Medicare patients with AF, Black patients were less likely to initiate any anticoagulant and Black and Hispanic patients were less likely to initiate DOACs. Medicare Part D enrollment did not moderate the associations between race and ethnicity and anticoagulant therapies.

Association Between Preoperative Depression and Readmission Rate Following Primary Total Joint Arthroplasty: A Systematic Review and Meta-Analysis

BACKGROUND

To date, no meta-analysis of the relationship between hospital readmission after total joint arthroplasty (TJA) and preoperative depression has been conducted. Hence, this systematic review and meta-analysis aimed to evaluate the association of preoperative depression with the readmission rate following TJA.

METHODS

We systematically searched MEDLINE, EMBASE, and Cochrane Library for studies published before March 28, 2021, which compared readmission rates in patients with or without preoperative depression who underwent TJA. The primary outcome was the relationship between preoperative depression and 30-day and 90-day readmission rates after TJA. We also performed surgery type subgroup analyses for total hip arthroplasty, total knee arthroplasty (TKA), total shoulder arthroplasty, and total ankle arthroplasty.

RESULTS

We included 9 studies with 395,815 TJA cases, of which 49,402 were diagnosed with preoperative depression and 346,413 were not. In pooled TJA analysis, the 30-day and 90-day readmission rates were significantly higher in the depression group than in the no-depression group (odds ratio [OR] 1.86, 95% confidence interval [CI] 1.26-2.73, P = .002 and OR 1.27, 95% CI 1.14-1.43,; P < .001, respectively). In the subgroup analyses, the 90-day readmission rate was higher in the depression group than in the no-depression group after TKA (OR 1.28, 95% CI 1.15-1.42, P < .001). There were no differences in other surgery types.

CONCLUSION

Based on available evidence, preoperative depression increases the readmission rate after TJA, particularly TKA. As depression is a modifiable risk factor, screening for depression and referring patients for proper psychiatric management are important.

LEVEL OF EVIDENCE

Level III, meta-analysis.

Community socioeconomic disadvantage drives type of 30-day medical-surgical revisits among patients with serious mental illness

Background

Patients with serious mental illness (SMI) are vulnerable to medical-surgical readmissions and emergency department visits.

Methods

We studied 1,914,619 patients with SMI discharged after medical-surgical admissions in Florida and New York between 2012 and 2015 and their revisits to the hospital within 30 days of discharge.

Results

Patients with SMI from the most disadvantaged communities had greater adjusted 30-day revisit rates than patients from less disadvantaged communities. Among those that experienced a revisit, patients from the most disadvantaged communities had 7.3 % greater 30-day observation stay revisits.

Conclusions

These results suggest that additional investments are needed to ensure that patients with SMI from the most disadvantaged communities are receiving appropriate post-discharge care.

Supplementary Information

The online version contains supplementary material available at 10.1186/s12913-021-06605-y.

Behavioral health home impact on transitional care and readmissions among adults with serious mental illness

OBJECTIVE

To evaluate the impact of Maryland's behavioral health homes (BHHs) on receipt of follow-up care and readmissions following hospitalization among Medicaid enrollees with serious mental illness (SMI).

DATA SOURCES

Maryland Medicaid administrative claims for 12 232 individuals.

STUDY DESIGN

Weighted marginal structural models were estimated to account for time-varying exposure to BHH enrollment and time-varying confounders. These models compared changes over time in outcomes among BHH and comparison participants. Outcome measures included readmissions and follow-up care within 7 and 30 days following hospitalization.

DATA COLLECTION/EXTRACTION METHODS

Eligibility criteria included continuous enrollment in Medicaid for the first two years of the study period; 21-64 years; and use of psychiatric rehabilitation services.

PRINCIPAL FINDINGS

Over three years, BHH enrollment was associated with 3.8 percentage point (95% CI: 1.5, 6.1) increased probability of having a mental health follow-up service within 7 days of discharge from a mental illness-related hospitalization and 1.9 percentage point (95% CI: 0.0, 3.9) increased probability of having a general medical follow-up within 7 days of discharge from a somatic hospitalization. BHHs had no effect on probability of readmission.

CONCLUSIONS

BHHs may improve follow-up care for Medicaid enrollees with SMI, but effects do not translate into reduced risk of readmission.

Hospital Readmission Outcomes by Frailty Risk in Adults in Behavioral Health Acute Care

The purpose of the current retrospective study was to determine whether frailty is predictive of 30-day readmission in adults aged ≥50 years who were admitted with a psychiatric diagnosis to a behavioral health hospital from 2013 to 2017. A total of 1,063 patients were included. A 26-item frailty risk score (FRS-26-ICD) was constructed from electronic health record (EHR) data. There were 114 readmissions. Cox regression modeling for demographic characteristics, emergent admission, comorbidity, and FRS-26-ICD determined prediction of time to readmission was modest (incremental area under the receiver operating characteristic curve = 0.671). The FRS-26-ICD was a significant predictor of readmission alone and in models with demographics and emergent admission; however, only the Elixhauser Comorbidity Index was significantly related to hazard of readmission adjusting for other factors (adjusted hazard ratio = 1.26, 95% confidence interval [1.17, 1.37]; p < 0.001), whereas FRS-26-ICD became non-significant. Frailty is a relevant syndrome in behavioral health that should be further studied in risk prediction and incorporated into care planning to prevent hospital readmissions. [Journal of Psychosocial Nursing and Mental Health Services, xx(x), xx-xx.].

Impact of Psychiatric Comorbidities on Surgical Outcomes for Non-Small Cell Lung Cancer

BACKGROUND

Psychiatric comorbidities (PC) have been associated with poor surgical outcomes in several malignancies. However, the impact of PC on surgical outcomes for non-small cell lung cancer (NSCLC) remains largely unknown.

METHODS

NSCLC patients who underwent pulmonary resection at a single institution between 2006-2017 were included. Presence of preoperative PC was identified by documented diagnostic codes. Demographic, histopathologic, perioperative, and survival data were analyzed. Categorical variables were compared using chi-squared or Fisher's exact test. Overall and disease-free survival were analyzed using Kaplan-Meier method. Univariable and multivariable logistic regression analyses were performed for 30-day readmission.

RESULTS

Among 2907 patients, PC were present preoperatively in 180 (6%), including 130 (72%) anxiety, 52 (29%) depression, 28 (16%) adjustment disorder, 16 (9%) alcohol abuse, 8 (4%) sleep disorder, and 3 (2%) schizophrenia. Patients with PC were younger, with fewer cardiovascular complications. There were no differences in length of stay. However, PC led to increased 30-day readmission (12% vs 6%, p=0.004). Reasons for readmission did not differ between groups (p=0.679). Upon multivariable analysis, PC independently predicted 30-day readmission (OR: 2.00, p=0.005). Importantly, there were no differences in 30- or 90-day mortality (p=0.495 and 0.748, respectively), overall survival (p=0.439), or disease-free survival (p=0.924).

CONCLUSIONS

NSCLC patients with and without PC experienced similar perioperative and long-term outcomes, suggesting that individuals should not be denied surgical care on the basis of such comorbidities. However, further research should seek to identify reasons for increased risk of readmission for patients with PC and validate these findings in other settings.

Substantial hospital level variation in all-cause readmission rates among medicare beneficiaries with serious mental illness

BACKGROUND

Patients with serious mental illness (i.e., SMI; bipolar disorder, major depressive disorder, and schizophrenia) are at increased risk of readmission, yet little is known about the extent to which readmission rates among these patients vary across hospitals. The purpose of this study was to examine the variation across hospitals in readmissions for patients with SMI and differences in the characteristics of hospitals with the highest and lowest adjusted readmission rates.

METHODS

We conducted a cross-sectional analysis of pooled inpatient claims from 2013-2016. Mixed logit models with hospital random effects were used to estimate the hospital-level variance. The sample included patients with SMI from a 5% sample of fee-for-service Medicare beneficiaries.

RESULTS

We identified 2066 hospitals with at least 30 index admissions for Medicare beneficiaries with SMI. In multivariate analyses, factors most strongly associated with increased risk of readmission included substance use disorder (OR 2.311; p < 0.001) and end stage renal disease (OR 2.024; p < 0.001). Unadjusted readmission for hospitals at the 5th and 95th percentiles of performance were 7.05% and 15.24%, respectively, constituting an 8.2% difference. Adjusting for patient and community characteristics reduced the spread in readmission rates between the 5th and 95th percentiles of hospitals by 1.0% (i.e. to 7.2%). Hospitals in the lowest vs. highest quintiles of adjusted readmission rates were more likely to be teaching hospitals (11.1% vs. 16.7%; p < 0.05) and located in the South (37.7% vs. 40.4%) or Midwest (19.8% vs. 30.0%; p < 0.001 for region differences).

CONCLUSIONS

There is substantial hospital-level variation in readmission rates among patients with serious mental illness, even after adjusting for patient and community characteristics. This has implications for policy guiding investment in hospital-based services and community resources, to improve transitions of care for patients with SMI.

Factors associated with 30-day readmissions following medical hospitalizations among Medicaid beneficiaries with schizophrenia, bipolar disorder, and major depressive disorder

While evidence suggests that adults with serious mental illness have an elevated rate of 30-day readmissions after medical hospitalizations, most studies are of patients who are privately insured or Medicare beneficiaries, and little is known about the differential experiences of people with schizophrenia, bipolar disorder, and major depression. We used the Truven Health Analytics MarketScan® Medicaid Multi-State Database to study 43,817 Medicaid enrollees from 11 states, age 18-64, who were discharged from medical hospitalizations in 2011. Our outcome was unplanned all-cause readmissions within 30 days of discharge. In a multivariable analysis, compared to those with no SMI, people with schizophrenia had the highest odds of 30-day readmission (aOR: 1.46, 95% CI: 1.33-1.59), followed by those with bipolar disorder (aOR: 1.25, 95% CI: 1.14-1.38), and those with major depressive disorder (aOR: 1.18, 95% CI: 1.06-1.30). Readmissions also were more likely among those with substance use disorders, males, those with Medicaid eligibility due to disability, patients with longer index hospitalizations, and those with 2 or more medical co-morbidities. This is the first large-scale study to demonstrate the elevated risk of hospital readmission among low-income, working-age adults with schizophrenia. Given their greater psychological, social, and economic vulnerability, our findings can be used to design transition interventions and service delivery systems that address their complex needs.